Piperidinylthioindole derivatives, their methods of preparation and pharmaceutical compositions in which they are present, useful especially as analgesics

A piperidinylthioindole compound of formula (I):

• ##STR50## in which:
• X.sub.1 and X.sub.2 are independently:
• a hydrogen atom;
• a halogen atom;
• a lower alkyl radical having 1 to 6 carbon atoms;
• a trifluoromethyl group;
• or
• a lower O-alkyl radical having 1 to 6 carbon atoms;
• and can he located in the 4-, 5-, 6- or 7-position of the indole ring,
• R.sub.1 is:
• a hydrogen atom;
• a lower alkyl radical having 1 to 6 carbon atoms;
• a radical --(CH.sub.2).sub.n -phenyl;
• or
• a radical --(CH.sub.2).sub.n -pyrrole;
• in which n is an integer from 0 to 4,
• R.sub.2 is:
• a hydrogen atom;
• a lower alkyl radical having 1 to 6 carbon atoms;
• or
• a phenyl radical which is unsubstituted or substituted by a halogen atom,
• R.sub.3 is:
• a hydrogen atom;
• a lower alkyl radical having 1 to 6 carbon atoms;
• or
• a radical --(CH.sub.2).sub.n -phenyl in which the phenyl is unsubstituted or substituted by a halogen atom, n being an integer from 0 to 4, and
• p is an integer from0 to 2, or a pharmaceutically acceptable addition salt thereof.